When I went to Ticketmaster to purchase tickets, I got two free downloads on iTunes. Combine that with the free downloads I got earlier this week from purchasing Ben Kweller tickets (yes, Ben is coming to town on Oct 16th!!), and I have 8 free downloads.
So I went to iTunes and bought the eight most popular Tilly and the Wall tracks on iTunes and will listen all day on my iPhone. When you go to a show, it's helpful to know the music. Ticketmaster and iTunes are doing their part to make that happen and it's a very smart move.